Air treatment device

Abstract

An air treatment device for a commercial vehicle includes a housing set up for connecting to an air dryer device by way of a bayonet fitting. A retaining device that is or can be mounted on the housing for retaining the bayonet fitting is provided on the housing.

What is claimed is: 
     
       1. An air treatment device for a commercial vehicle having a housing which is designed for connection to an air dryer device via a quarter turn fastener, comprising:
 a securing device operatively configured to be fitted onto the housing, 
 wherein the securing device secures the quarter turn fastener to the housing, 
 wherein the securing device has at least one predetermined breaking point and at least one venting duct, the predetermined breaking point being configured to break at an operator-applied breaking torque above an installation torque required for installation of the securing device when the securing device is properly fitted onto the housing; 
 wherein the predetermined breaking point is arranged in such a manner that the at least one venting duct is opened outward by breaking of the predetermined breaking point. 
 
     
     
       2. The air treatment device as claimed in  claim 1 , wherein, in a secured state, the securing device blocks rotation of a quarter turn ring of the quarter turn fastener in one direction of rotation. 
     
     
       3. The air treatment device as claimed in  claim 1 , wherein, in a secured state, the securing device abuts against a lug of the quarter turn fastener. 
     
     
       4. The air treatment device as claimed in  claim 2 , wherein, in a secured state, the securing device abuts against a lug of the quarter turn fastener. 
     
     
       5. The air treatment device as claimed in  claim 1 , wherein the securing device is a closure screw having a closure screw head which, in a secured state, is arranged such that the screw head blocks rotation of a lug of a quarter turn ring of the quarter turn fastener in one direction of rotation. 
     
     
       6. The air treatment device as claimed in  claim 2 , wherein the securing device is a closure screw having a closure screw head which, in a secured state, is arranged such that the screw head blocks rotation of a lug of a quarter turn ring of the quarter turn fastener in one direction of rotation. 
     
     
       7. The air treatment device as claimed in  claim 3 , wherein the securing device is a closure screw having a closure screw head which, in a secured state, is arranged such that the screw head blocks rotation of a lug of a quarter turn ring of the quarter turn fastener in one direction of rotation. 
     
     
       8. The air treatment device as claimed in  claim 1 , wherein a bore for receiving the securing device is provided in the housing. 
     
     
       9. The air treatment device as claimed in  claim 8 , wherein the bore reaches into an interior space of the air treatment device, which interior space is pressurized during operation. 
     
     
       10. The air treatment device as claimed in  claim 1 , wherein, in a secured state, the securing device seals the air treatment device against a loss of compressed air. 
     
     
       11. The air treatment device as claimed in  claim 10 , wherein, in a non-secured state, the securing device does not seal the air treatment device against a loss of compressed air. 
     
     
       12. The air treatment device as claimed in  claim 1 , wherein at least one of the venting ducts is arranged so as to permit venting of the air treatment device when the securing device is released. 
     
     
       13. The air treatment device as claimed in  claim 1 , wherein the housing has a guide for the securing device. 
     
     
       14. The air treatment device as claimed in  claim 13 , wherein the guide completely surrounds an end region of the securing device. 
     
     
       15. The air treatment device as claimed in  claim 1 , wherein the housing has a stop for a lug of the quarter turn fastener, said stop blocking rotation of the quarter turn fastener in one direction of rotation. 
     
     
       16. The air treatment device as claimed in  claim 15 , wherein, in a secured state, the lug of the quarter turn fastener is arranged between the stop and the securing device.